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Finding the Fourth Proportional to 36,004.88, 49,678.80 and 20,888.80

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Solution

The fourth proportional to 36,004.88, 49,678.80 and 20,888.80 is: 28,821.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,004.88 : 49,678.80 = 20,888.80 : x
  2. Step 2: Convert to fraction form
    36,004.88/49,678.80 = 20,888.80/x
  3. Step 3: Cross multiply
    36,004.88x = 49,678.80 × 20,888.80
  4. Step 4: Simplify right side
    36,004.88x = 1,037,730,517.44
  5. Step 5: Solve for x
    x = 1,037,730,517.44/36,004.88
  6. Step 6: Final answer
    x = 28,821.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.